Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-22 Thread Domenico Sgarbossa
; "Domenico Sgarbossa" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Friday, June 18, 2004 8:58 PM Subject: Re: [PERFORM] [BULK] Problems with vacuum! > I believe it was more like the kernel was tuned to make it less common, > but certain things can still trigger it. I kn

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-18 Thread Joshua D. Drake
Hello, I would have to double check BUT I believe this is fixed in later 2.4.x kernels as well. If you don't want to go through the hassle of 2.6 (although it really is a nice kernel) then upgrade to 2.4.26. Sincerely, Joshau D. Drake Scott Marlowe wrote: On Fri, 2004-06-18 at 09:11, Tom Lane wr

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-18 Thread Scott Marlowe
I believe it was more like the kernel was tuned to make it less common, but certain things can still trigger it. I know the problem was still there in the 2.4.24 on the last server I was playing with, but it was a lot less of a problem than it had been under 2.4.9 on an earlier machine with the sa

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-18 Thread Scott Marlowe
On Fri, 2004-06-18 at 09:11, Tom Lane wrote: > "Domenico Sgarbossa" <[EMAIL PROTECTED]> writes: > > so when the users go home, i've got something like 15/2kb free ram, the > > rest is cached and 0kb of swap... > > It seems that when pg_dump starts the cached memory isn't released so the > > sys

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-18 Thread Tom Lane
"Domenico Sgarbossa" <[EMAIL PROTECTED]> writes: > so when the users go home, i've got something like 15/2kb free ram, the > rest is cached and 0kb of swap... > It seems that when pg_dump starts the cached memory isn't released so the > system begin to swap, A sane kernel should drop disk buff

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-18 Thread Domenico Sgarbossa
The problems still remains... I've tried to change shmax to 128 mb (i've got 2 GB of ram), then the others parameter are set as follow: shared_buffers = 8096# 2*max_connections, min 16 max_fsm_relations = 500# min 10, fsm is free space map max_fsm_pages = 15000 # min 1000, fsm is

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-14 Thread Dawn Hollingsworth
We actually found that in the 2.4-20 kernel for RedHat there was a known issue that was causing cached memory to not be reused and our box started to swap also. http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=89226 This may be what you are experiencing if your using the same kernel. Dawn H

Re: [PERFORM] [BULK] Problems with vacuum!

2004-06-11 Thread Doug McNaught
"Domenico Sgarbossa" <[EMAIL PROTECTED]> writes: > Thanks for your advice! > > It seems that the cached memory isn't released by the system... so the > system begin to swap to disk! If you really think this is true, there should be a process that is holding on to the memory. Use 'ps' to find tha